2. Analog video
Input
CVBS / COMPONENT
A
Is the power voltage being output correctly?
SIDE CNT PCB
V+5V : CN28B-1 pin
V-5V : CN28B-5 pin
Check of the I2C control signal for video selector
IC (IC511).
DIGITAL PCB
I2C(SCL) : BN21A-5 pin (AVSCL)
I2C(SDA) : BN21A-4 pin (AVSDA)
See "I2C communication wave form (sample)"
Does the signal input to the video decoder
(IC351)?
DIGITAL PCB
V : R3527
COMPONENT-Y : R3530
COMPONENT-Cb : R3528
COMPONENT-Cr : R3529
· SIDE CNT PCB (BN77D) connection is faulty.
· REGULATOR (SPEAKER) PCB faulty.
DIGITAL PCB faulty.
· FRONT CNT board is faulty or inserted incor-
rectly.
(CN21A)
VIDEO PCB faulty. ⇒ TO "B"
· CVBS Monitor Out is NG
COMPONENT Monitor Out is NG ⇒ To "B"
· HDMI Out is NG ⇒ TROUBLE SHOOTING To "3. HDMI/DVI"
MONITOR OUT (CVBS / COMPONENT / HDMI OUT NG
To "A"
Input CVBS
Perform the operation below beforehand.
b
Check it whether connection cable and Monitor are normal.
b
VIDEO Convert is set to ON.
b
Setting as follows.
V : SAT
COMPONENT : SAT
Input COMPONENT
NO
NO
NO
YES
YES
YES
I2C communication wave form (sample)
CLK
DATA
81
Caution in
servicing
Electrical Mechanical Repair Information Updating
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